#include <lidep.h>

Inheritance diagram for OpalLineSilenceDetector:

Collaboration diagram for OpalLineSilenceDetector:

Public Member Functions
Construction
	OpalLineSilenceDetector (OpalLine &line, const Params &newParam)

Overrides from OpalSilenceDetector
virtual unsigned	GetAverageSignalLevel (const BYTE *buffer, PINDEX size)

Public Member Functions inherited from OpalSilenceDetector
	P_DECLARE_STREAMABLE_ENUM (Modes, NoSilenceDetection, FixedSilenceDetection, AdaptiveSilenceDetection)

	OpalSilenceDetector (const Params &newParam)

const PNotifier &	GetReceiveHandler () const

void	SetParameters (const Params &params, const int clockRate=0)

void	GetParameters (Params &params)

void	SetClockRate (unsigned clockRate)

unsigned	GetClockRate () const

Result	GetResult (unsigned currentThreshold=NULL, unsigned currentLevel=NULL) const

Result	Detect (const BYTE *audioPtr, PINDEX audioLen, unsigned timestamp)

Protected Attributes
OpalLine &	m_line

Protected Attributes inherited from OpalSilenceDetector
PNotifier	m_receiveHandler

Mode	m_mode

unsigned	m_signalDeadband

unsigned	m_silenceDeadband

unsigned	m_adaptivePeriod

unsigned	m_clockRate

unsigned	m_lastTimestamp

unsigned	m_receivedTime

unsigned	m_levelThreshold

unsigned	m_signalMinimum

unsigned	m_silenceMaximum

unsigned	m_signalReceivedTime

unsigned	m_silenceReceivedTime

unsigned	m_lastSignalLevel

Result	m_lastResult

Additional Inherited Members
Public Types inherited from OpalSilenceDetector
typedef Modes	Mode

enum	Result { IsSilent, VoiceActivated, VoiceActive }

Static Public Member Functions inherited from OpalSilenceDetector
static unsigned	GetAverageSignalLevelPCM16 (const BYTE *buffer, PINDEX size, bool asPercentage)

Protected Member Functions inherited from OpalSilenceDetector
	PDECLARE_NOTIFIER (RTP_DataFrame, OpalSilenceDetector, ReceivedPacket)

	PDECLARE_MUTEX (m_inUse)

Constructor & Destructor Documentation

OpalLineSilenceDetector::OpalLineSilenceDetector	(	OpalLine &	line,
		const Params &	newParam
	)

Create a new silence detector for a LID.

Parameters

line	Line to detect silence on
newParam	New parameters for silence detector

Member Function Documentation

virtual unsigned OpalLineSilenceDetector::GetAverageSignalLevel	(	const BYTE *	buffer,
		PINDEX	size
	)

virtual

Get the average signal level in the stream. This is called from within the silence detection algorithm to calculate the average signal level of the last data frame read from the stream.

The default behaviour returns UINT_MAX which indicates that the average signal has no meaning for the stream.

Parameters

buffer	RTP payload being detected
size	Size of payload buffer

Implements OpalSilenceDetector.

Field Documentation

OpalLine& OpalLineSilenceDetector::m_line

protected

The documentation for this class was generated from the following file:

lidep.h

Public Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation